JP3793855B2 - Roasted coffee beans crusher - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roasted coffee bean crusher, and more particularly to a roasted coffee bean crusher in which the size of pulverized particles of roasted coffee beans can be easily adjusted.
[0002]
[Prior art]
Generally, in order to extract drinking coffee, roasted coffee beans are ground to an appropriate size. At this time, if the ground coffee bean particles are fine, the area in contact with water increases, so when extracting coffee, the taste and aroma ooze out quickly, but the taste tends to be bitter or astringent. . On the other hand, when the pulverized particles become large, it takes a long time for the taste to ooze out, and it is difficult to sufficiently extract the taste and aroma of the coffee. Therefore, in order to extract coffee with good taste and aroma, it is required to grind roasted coffee beans to an appropriate size.
[0003]
A normal roasted coffee bean crusher for crushing roasted coffee beans is provided with an upper fixed cutter provided with a crushing blade on the lower surface and a lower portion of the fixed cutter spaced at a predetermined interval, and pulverized on the upper surface. A lower rotary cutter provided with a blade. The lower rotary cutter rotates by driving the motor, and roasted coffee beans pass through the center of the upper fixed cutter and are supplied to the center between the two cutters. Further, the pulverizing blade of the fixed cutter and the pulverizing blade of the rotary cutter, which are arranged so as to face each other, are configured so as to go from the central part to the outer periphery and therefore close to each other. In this roasted coffee bean crusher, when the lower rotary cutter rotates, the roasted coffee beans put in the center between the two cutters are crushed by the crushing blades of both cutters while moving radially outward by centrifugal force. .
[0004]
The upper fixed cutter of such a crusher is configured to move up and down within a predetermined section by a user's manual operation so that the interval between both cutters can be adjusted, and thus the particle size of roasted coffee beans to be crushed Can be adjusted.
[0005]
[Problems to be solved by the invention]
However, such a roasted coffee bean crusher uses a manual operation by the user to raise and lower the upper fixed cutter between the fixed cutter and the rotary cutter so that the user can adjust the size of the roasted coffee beans. Therefore, there is a problem that the adjustment of the particle size of the ground coffee beans becomes complicated.
[0006]
Therefore, the present invention has been made to solve the conventional problems as described above, and its purpose is to easily adjust the interval between the fixed cutter and the rotary cutter to reduce the particle size of the ground coffee beans. It is an object of the present invention to provide a roasted coffee bean crusher that can be easily adjusted.
[0007]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention provides a rotary cutter that is rotated by driving a motor and provided with a crushing blade on the upper surface, and is provided separately on the upper portion of the rotary cutter, and a crushing blade is provided on the lower surface. A fixed cutter provided with a raw material inlet at the center, a worm wheel screwed to the fixed cutter to raise and lower the fixed cutter, and the worm wheel to rotate the worm wheel There is provided a roasted coffee bean crusher comprising a worm gear that meshes with a tooth portion on the outer periphery of the worm gear, and an interval adjusting motor that rotates the worm gear in the forward direction and the reverse direction.
[0008]
The roasted coffee bean crusher is installed in the housing surrounding the rotary cutter and the fixed cutter, and in the housing so as to be able to move up and down in a state in which the rotation is restricted to support the fixed cutter, and the worm wheel And a support member that is screwed to the support member.
[0009]
The worm wheel includes a hollow shaft that communicates with the raw material inlet of the fixed cutter so that roasted coffee beans can be introduced through the center thereof, and the support member is screwed onto the outer surface of the hollow shaft of the worm wheel. And a cylindrical connecting part connected to each other.
[0010]
The housing may be provided with a discharge port through which coffee bean powder crushed by the fixed cutter and the rotary cutter is discharged, and a discharge guide tube may be provided at the discharge port.
[0011]
The discharge guide tube may be provided with a fixed discharge unit that discharges the ground coffee bean powder by a predetermined amount.
[0012]
The roasted coffee bean crusher may further include an operation switch for controlling the operation of the interval adjusting motor.
[0013]
A raw material supply container for supplying roasted coffee beans may be connected to the hollow shaft of the worm wheel.
[0014]
A guide groove may be formed on the inner surface of the housing in order to guide the raising and lowering of the support member, and a guide protrusion inserted into the guide groove may be provided on the outer surface of the support member.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0016]
As shown in FIG. 1, the roasted coffee bean pulverizing apparatus according to the present invention includes a housing 10 in which a motor 11 is built in a lower portion and a pulverizing chamber 12 for pulverizing roasted coffee beans is provided in an upper portion. The crushing chamber 12 provided in the upper part of the housing 10 has a cylindrical shape with an open upper end.
[0017]
Inside the grinding chamber 12, a rotating plate 14 coupled to the shaft 13 of the motor 11 is provided on the lower side. A disk-shaped rotary cutter 16 is fixed to the upper surface of the rotary plate 14 by a fixing screw 15 so as to rotate together with the rotary plate 14, and a crushing blade is provided on the upper surface of the rotary cutter 16. In addition, a support member 20 that can be moved up and down in a predetermined section in a state where rotation is restricted is provided on the upper side inside the grinding chamber 12. A disk-shaped fixed cutter 18 is fixed to the lower part of the support member 20 by a fixing screw 17 so that it can be moved up and down together with the support member 20, and the lower surface of the fixed cutter 18 faces the grinding blade of the rotary cutter 16. Is provided with a crushing blade. The fixed cutter 18 is provided with a raw material input port 19 at the center thereof so that roasted coffee beans can be input.
[0018]
The crushing blade of the rotary cutter 16 is formed so as to be higher from the center to the outer periphery, that is, curved so as to approach the fixed cutter 18 side from the center to the outer peripheral side. It is formed so as to be lowered as it goes from the center to the outer periphery, that is, to be closer to the rotary cutter 16 as it goes from the center to the outer periphery. Therefore, the interval between the crushing blades of the rotary cutter 16 and the crushing blades of the fixed cutter 18 is configured to gradually decrease from the central portion toward the outer peripheral portion.
[0019]
By providing the rotary cutter 16 and the fixed cutter 18 configured as described above, when the rotary cutter 16 is rotated by driving the motor 11, the rotary cutter 16 and the fixed cutter 18 are inserted into the central portion between the cutters 16 and 18 through the raw material inlet 19 of the fixed cutter 18. The roasted coffee beans are pulverized by the pulverizing blades of the cutters 16 and 18 while moving to the outer peripheral portion between the cutters 16 and 18 by centrifugal force.
[0020]
The support member 20 that supports the fixed cutter 18 includes a disk-shaped flange portion 21 to which the fixed cutter 18 is coupled to the lower surface, and a cylinder that extends from the center portion of the flange portion 21 upward by a predetermined length in FIG. The connection part 22 of a shape is included. As shown in FIG. 3, guide grooves 23 having a predetermined width are formed vertically on both sides of the inner surface of the housing 10 so as to restrict the rotation of the flange portion 21 and guide the raising and lowering. Guide protrusions 24 that are engaged with the guide grooves 23 are provided on opposite sides of the outer surface of the flange portion 21.
[0021]
As shown in FIGS. 1 and 2, the support member 20 is for adjusting the interval between the fixed cutter 18 and the rotary cutter 16 and adjusting the particle size of the ground coffee beans. An electric lifting device 30 that moves up and down in a predetermined section is provided above and below indicated by arrows in FIG. The electric lifting device 30 includes a worm wheel 31 having a hollow shaft 31a that is screwed and connected to the support member 20, and a tooth portion formed on the outer peripheral surface of the worm wheel 31 for rotating the worm wheel 31. And a distance adjusting motor 34 for rotating the worm gear 32 in the forward direction and the reverse direction. An upper case 40 that surrounds and protects the worm wheel 31 and the worm gear 32 is installed on the upper part of the housing 10 where the electric lift 30 is installed.
[0022]
The hollow shaft 31 a of the worm wheel 31 has an upper portion extending a predetermined length above the upper case 40 and a lower portion extending a predetermined length inside the connecting portion 22 of the support member 20. Then, the male screw portion 35 formed on the outer surface of the hollow shaft 31 a extending downward is coupled to the female screw portion 36 formed on the inner surface of the connecting portion 22 provided on the support member 20, whereby the worm wheel 31 and the support member 20. Connected to Therefore, the roasted coffee beans supplied through the hollow shaft 31 a of the worm wheel 31 are guided to the raw material inlet 19 provided at the center of the fixed cutter 18. Further, when the worm wheel 31 rotates in the forward direction of the arrow R1 direction or the reverse direction of the arrow R2 in FIG. 2, the support member 20 screwed into the hollow shaft 31a of the worm wheel 31 is connected to the predetermined section. 1 can be moved up and down in the direction of arrow A or arrow B in FIG. 1, so that the interval between the fixed cutter 18 and the rotary cutter 16 can be adjusted. For this reason, the worm wheel 31 is rotatably supported inside the upper case 40 in a state in which raising and lowering is restricted.
[0023]
As shown in FIG. 2, the worm gear 32 is attached to a rotating shaft 33 supported on one side of the upper case 40 in the vicinity of the outer peripheral portion of the worm wheel 31. The rotating shaft 33 of the worm gear 32 is connected to a distance adjusting motor 34 mounted on the outer surface of the upper case 40. Therefore, when the interval adjusting motor 34 rotates, the worm gear 32 rotates to rotate the worm wheel 31. The interval adjusting motor 34 is configured to be rotated in the forward or reverse direction of the arrow S1 direction or the arrow S2 direction in FIG. 2 when the user operates the operation switch 37.
[0024]
As shown in FIG. 1, a raw material supply container 50 for supplying roasted coffee beans is connected to a hollow shaft 31 a of a worm wheel 31 extending above the upper case 40. The housing 10 surrounding the fixed cutter 18 and the rotary cutter 16 is formed with a discharge port 60 that allows the ground coffee bean powder to be discharged. The discharge port 60 guides the coffee bean powder to the outside. For this purpose, a discharge guide pipe 61 is connected.
[0025]
When the roasted coffee bean crusher according to the present invention is installed in a normal coffee vending machine, a fixed amount discharge unit 62 for discharging a fixed amount of coffee powder from the discharge guide tube 61 is provided. This fixed amount discharge unit 62 is for supplying the ground coffee bean powder by a preset amount to a coffee extraction device (not shown) inside the coffee vending machine. At this time, the motor 11 that operates the rotary cutter 16 and the fixed amount discharge unit 62 are controlled by the control unit of the coffee vending machine.
[0026]
Hereinafter, the operation of the roasted coffee bean crusher according to the present invention will be described.
[0027]
When the user puts roasted coffee beans into the raw material supply container 50, the roasted coffee beans pass between the fixed cutter 18 and the rotary cutter 16 through the hollow shaft 31 a of the worm wheel 31 and the raw material inlet 18 of the fixed cutter 18. Supplied in the center. When the motor 11 operates in this state, the lower rotary cutter 16 rotates at a high speed, and the supplied roasted coffee beans are crushed by both the cutters 16 and 18 while moving radially outward by centrifugal force. The ground coffee bean powder is discharged through the discharge port 60.
[0028]
On the other hand, when the particle size of the pulverized coffee bean powder is too large or small, the user operates the interval adjusting motor 34 by operating the operation switch 37 to raise and lower the fixed cutter 18 by a predetermined distance. And the spacing between the rotary cutters 16 and thus the particle size of the ground coffee bean powder. At this time, the worm gear 32 is rotated by the interval adjusting motor 34 driven in the forward direction or the reverse direction by the operation of the operation switch 37, and the worm wheel 31 is rotated by the rotation of the worm gear 32. Further, when the worm wheel 31 rotates in the forward direction or the reverse direction, the support member 20 screwed into the hollow shaft 31a of the worm wheel 31 moves up and down by a predetermined distance to adjust the distance between the cutters 16 and 18.
[0029]
【The invention's effect】
As described above, the roasted coffee bean crusher according to the present invention is crushed because the upper fixed cutter moves up and down in a predetermined section by the operation of the electric lifting device and adjusts the interval between the fixed cutter and the rotary cutter. The particle size of coffee beans can be easily adjusted.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of a roasted coffee bean crusher according to the present invention.
2 is a cross-sectional view taken along line II-II in FIG.
3 is a cross-sectional view taken along line III-III in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Housing 11 Motor 12 Crushing chamber 16 Rotating cutter 18 Fixed cutter 20 Support member 21 Flange part 22 Connecting part 23 Guide groove 24 Guide protrusion 30 Electric lifting device 31 Worm wheel 32 Worm gear 34 Spacing adjustment motor 37 Operation switch 40 Upper case 50 Raw material Supply container 60 Discharge port 61 Discharge guide tube 62 Fixed discharge section

Claims (8)

A rotating cutter that is rotated by driving a motor and provided with a crushing blade on the upper surface;
A fixed cutter in which a crushing blade is provided on the lower surface, and a raw material charging port is formed in the center, provided separately on the upper part of the rotary cutter,
In order to raise and lower the fixed cutter, a worm wheel screwed and connected to the fixed cutter;
In order to rotate the worm wheel, a worm gear meshing with a tooth portion provided on the outer periphery of the worm wheel;
An apparatus for crushing roasted coffee beans, comprising an interval adjusting motor for rotating the worm gear in the forward direction and the reverse direction.   The roasted coffee bean crusher is installed in the housing surrounding the rotary cutter and the fixed cutter, and in the housing so as to be able to move up and down in a state where the rotation is restricted, for supporting the fixed cutter, and the worm wheel The roasted coffee bean crusher according to claim 1, further comprising a support member that is screwed to the support member.   The worm wheel includes a hollow shaft communicating with the raw material inlet of the fixed cutter so that roasted coffee beans can be fed through the center thereof, and the support member is screwed onto the outer surface of the hollow shaft of the worm wheel. The roasted coffee bean pulverizing apparatus according to claim 2, further comprising a cylindrical connecting portion connected by being connected.   3. The housing is provided with a discharge port through which coffee bean powder pulverized by the fixed cutter and the rotary cutter is discharged, and a discharge guide tube is provided at the discharge port. Roasted coffee beans crusher.   The roasted coffee bean pulverizing apparatus according to claim 4, wherein the discharge guide tube is provided with a quantitative discharge unit for discharging the pulverized coffee bean powder by a predetermined amount.   The roasted coffee bean crusher according to claim 1, further comprising an operation switch for controlling an operation of the interval adjusting motor.   The roasted coffee bean crusher according to claim 3, wherein a raw material supply container for supplying roasted coffee beans is connected to the hollow shaft of the worm wheel.   A guide groove is formed on the inner surface of the housing in order to guide the raising and lowering of the support member, and a guide protrusion that is engaged with the guide groove is provided on the outer surface of the support member. The roasted coffee bean crusher according to claim 2.

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